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Podiyanachari SK, Bender G, Daniliuc CG, Kehr G, Erker G. Catalytic Formation of Five-Membered Zirconacycloallenoids and Their Reaction with Carbon Dioxide. Organometallics 2014. [DOI: 10.1021/om500399w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Georg Bender
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
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Scarborough CC, Wieghardt K. Electronic structure of 2,2'-bipyridine organotransition-metal complexes. Establishing the ligand oxidation level by density functional theoretical calculations. Inorg Chem 2011; 50:9773-93. [PMID: 21678919 DOI: 10.1021/ic2005419] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A density functional theoretical (DFT) study (B3LYP) has been carried out on 20 organometallic complexes containing η(5)- and/or η(3)-coordinated cyclopentadienyl anions (Cp(-)) and 2,2'-bipyridine (bpy) ligand(s) at varying oxidation levels, i.e., as the neutral ligand (bpy(0)), as the π-radical monoanion (bpy(•-))(-), or as the diamagnetic dianion (bpy(2-))(2-). The molecular and electronic structures of these species in their ground states and, in some cases, their first excited states have been calculated using broken-symmetry methodology. The results are compared with experimental structural and spectroscopic data (where available) in order to validate the DFT computational approach. The following electron-transfer series and complexes have been studied: [(Cp)(2)V(bpy)](0,+,2+) (1-3), [(Cp)(2)Ti(bpy)](-,0,+,2+) (4-7), [(Cp)(2)Ti(biquinoline)](0,+) (8 and 9), [(Cp*)(2)Ti(bpy)](0) (10) (Cp* = pentamethylcyclopentadienyl anion), [Cp*Co(bpy)](0,+) (11 and 12), [Cp*Co(bpy)Cl](+,0) (13 and 14), [Fe(toluene)(bpy)](0) (15), [Cp*Ru(bpy)](-) (16), [(Cp)(2)Zr(bpy)](0) (17), and [Mn(CO)(3)(bpy)](-) (18). In order to test the predictive power of our computations, we have also calculated the molecular and electronic structures of two complexes, A and B, namely, the diamagnetic dimer [Cp*Sc(bpy)(μ-Cl)](2) (A) and the paramagnetic (at 25 °C) mononuclear species [(η(5)-C(5)H(4)(CH(2))(2)N(CH(3))(2))Sc((m)bpy)(2)] (B). The crystallographically observed intramolecular π-π interaction of two N,N'-coordinated π-radical anions in A leading to an S = 0 ground state is reliably reproduced. Similarly, the small singlet-triplet gap of ~600 cm(-1) between two antiferromagnetically coupled (bpy(•-))(-) ligands in B, two ferromagnetically coupled radical anions in the triplet excited state of B, and the structures of A and B is reproduced. Therefore, we are confident that we can present computationally obtained, detailed electronic structures for complexes 1-18. We show that N,N'-coordinated neutral bpy(0) ligands behave as very weak π acceptors (if at all), whereas the (bpy(2-))(2-) dianions are strong π-donor ligands.
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Affiliation(s)
- Christopher C Scarborough
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
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Kambe N, Terao J, Iwasaki T. Transition Metal Catalyzed Alkylation at sp3-, sp2-, and sp-Carbons. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.1271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhao D, Gao B, Gao W, Luo X, Tang D, Mu Y, Ye L. New Titanium Complexes with Symmetric or Asymmetric cis-9,10-Dihydrophenanthrenediamide Ligands Formed through Sequential Intramolecular C−C Bond-Forming Reactions. Inorg Chem 2010; 50:30-6. [DOI: 10.1021/ic1008768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dapeng Zhao
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
| | - Bo Gao
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
| | - Wei Gao
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
| | - Xuyang Luo
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
| | - Duihai Tang
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
| | - Ying Mu
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
| | - Ling Ye
- State Key Laboratory of Supramolecular Structure and Materials, School of Chemistry, Jilin University, Chang Chun 130012, People’s Republic of China
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Zhao D, Gao W, Mu Y, Ye L. Direct Synthesis of Titanium Complexes with Chelatingcis-9,10-Dihydrophenanthrenediamide Ligands through Sequential CC Bond-Forming Reactions fromo-Metalated Arylimines. Chemistry 2010; 16:4394-401. [DOI: 10.1002/chem.200903017] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Fujii Y, Terao J, Kato Y, Kambe N. Titanocene-catalyzed alkylative dimerization of vinyl Grignard reagent using alkyl halides. Chem Commun (Camb) 2008:5836-8. [DOI: 10.1039/b813596g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Terao J, Kambe N. Transition metal catalyzed carbon-silicon bond forming reactions using chlorosilanes promoted by Grignard reagents. CHEM REC 2007; 7:57-67. [PMID: 17318829 DOI: 10.1002/tcr.20101] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
New catalytic C--Si bond-forming reactions using chlorosilanes are described. These reactions proceed efficiently under mild conditions by the combined use of Grignard reagents and transition metal catalysts, such as Ti, Zr, Ni, and Pd. It is proposed that ate complex intermediates formed by the reaction of transition metals with Grignard reagents play important roles as the active catalytic species. The present study demonstrates the practical use of chlorosilanes in transition metal catalyzed silylation reactions providing convenient methods for allyl- or vinylsilane synthesis. The reaction pathways of these transformations as well as the scope and limitations are discussed.
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Affiliation(s)
- Jun Terao
- Department of Applied Chemistry & Center for Atomic and Molecular Technologies Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Beckhaus R, Flatau S, Trojanov S, Hofmann P. Struktur und Reaktivität von Bis(π‐pentamethylcyclopentadienyl)‐(2‐methyliden)titanacyclobutan. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19921250204] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rüdiger Beckhaus
- Zentralinstitut für Organische Chemie, Rudower Chaussee 5, O‐1199 Berlin
| | - Sabine Flatau
- Zentralinstitut für Organische Chemie, Rudower Chaussee 5, O‐1199 Berlin
| | - Sergej Trojanov
- Lomonossov Universität Moskau, Fakultät für Chemie, 119899 Moskau
| | - Peter Hofmann
- Anorganisch‐chemisches Institut der Technischen Universität München, Lichtenbergstraße 4, W‐8046 Garching
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Graham TW, Kickham J, Courtenay S, Wei P, Stephan DW. Reduction of Titanium(IV)-Phosphinimide Complexes: Routes to Ti(III) Dimers, Ti(IV)-Metallacycles, and Ti(II) Species. Organometallics 2004. [DOI: 10.1021/om049826q] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Todd W. Graham
- Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada, N9B 3P4
| | - James Kickham
- Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada, N9B 3P4
| | - Silke Courtenay
- Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada, N9B 3P4
| | - Pingrong Wei
- Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada, N9B 3P4
| | - Douglas W. Stephan
- Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, Canada, N9B 3P4
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Nitschke JR, Tilley TD. Novel Templating Effect in the Macrocyclization of Functionalized Diynes by Zirconocene Coupling. Angew Chem Int Ed Engl 2001; 40:2142-2145. [DOI: 10.1002/1521-3773(20010601)40:11<2142::aid-anie2142>3.0.co;2-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2001] [Indexed: 11/08/2022]
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Nitschke JR, Tilley TD. Novel Templating Effect in the Macrocyclization of Functionalized Diynes by Zirconocene Coupling. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010601)113:11<2200::aid-ange2200>3.0.co;2-t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Watabe H, Terao J, Kambe N. Formation of 1,4-disilyl-2-butenes from vinyl grignard reagent and chlorosilanes catalyzed by a titanocene complex. Org Lett 2001; 3:1733-5. [PMID: 11405698 DOI: 10.1021/ol015928q] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Symmetrical 1,4-disilyl-2-butenes 1 have been prepared by the reaction of vinyl Grignard reagent with chlorosilanes. This reaction proceeds efficiently in the presence of a catalytic amount of titanocene dichloride at 0 degrees C in THF. When dichlorodiphenylsilane was used, 1,1-diphenyl-1-silacyclo-3-pentene 2 was obtained in a good yield.
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Affiliation(s)
- H Watabe
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Böhme U, Günther B. Synthesis and structure determination of bis(1,3-di-tert-butylcyclopentadienyl)(divinyl)hafnium. INORG CHEM COMMUN 2000. [DOI: 10.1016/s1387-7003(00)00033-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Alvarado Y, Boutry O, Gutiérrez E, Monge A, Nicasio MC, Poveda ML, Pérez PJ, Ruíz C, Bianchini C, Carmona E. Formation of Hydrido–η3-Allyl Complexes of IrIII by Sequential Olefinic CH Bond Activation and CC Coupling of Alkenyl and Olefin Ligands. Chemistry 1997. [DOI: 10.1002/chem.19970030606] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Beckhaus R. Carbenoide Komplexverbindungen elektronenarmer Übergangsmetalle — Synthesen von und mit kurzlebigen Synthesebausteinen. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090705] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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18
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α-H-Übertragungsreaktionen an Vinylmetallverbindungen — Darstellung von (η5-Cyclopentadienyl) (η5-pentamethylcyclopentadienyl) — (2-methyliden)titanacyclobutan. J Organomet Chem 1995. [DOI: 10.1016/0022-328x(95)05704-s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Beckhaus R, Sang J, Oster J, Wagner T. Zum reaktionsverhalten eines vinylidentitanocen-intermediates gegenüber protischen agenzien—selektive synthesen von 1-alkenyltitanocenverbindungen. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)87203-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Thiele KH, B�hme U, Sieler J. Beitr�ge zur Chemie der Alkylverbindungen von �bergangsmetallen. 60. Darstellung und Eigenschaften von Zirconocendibenzylen ? Molek�lstruktur von (Me3SiC5H4)2Zr(CH2C6H5)2. Z Anorg Allg Chem 1993. [DOI: 10.1002/zaac.19936191121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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B�hme U, Thiele KH. Intramolekulare C?H-Aktivierung bei der Reaktion von Bis(benzylcyclopentadienyl)zirconiumdichlorid mit Vinyllithium ? Bildung eines Crotyl-zirconacyclus. Z Anorg Allg Chem 1993. [DOI: 10.1002/zaac.19936190828] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Beckhaus R, Wilbrandt D, Flatau S, Böhmer WH. Molekulares Design von übergangsmetallkomplexverbindungen zur aktivierung kleiner moleküle. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83115-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Dang Y, Geise HJ. Low-valent organotitanium species and their applications to organic synthesis. J Organomet Chem 1991. [DOI: 10.1016/0022-328x(91)83153-u] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Fryzuk MD, Haddad T, Berg DJ. Complexes of groups 3, 4, the lanthanides and the actinides containing neutral phosphorus donor ligands. Coord Chem Rev 1990. [DOI: 10.1016/0010-8545(90)80063-y] [Citation(s) in RCA: 83] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Beckhaus R, Thiele KH, Ströhl D. Bis(pentamethylcyclopentadienyl)metalldivinyl-Verbindungen des Titaniums, Zirconiums und Hafniums; Bildung von Titanacyclobutan- und Zirconacyclopent-2-en-Derivaten. J Organomet Chem 1989. [DOI: 10.1016/0022-328x(81)80005-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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